43

AT86RF211

1942C–WIRE–06/02

Synthesizer

Specification

Unless otherwise specified, data is given for T = 25°C, V

ii

Notes:

1. Crystal frequency can be slightly changed but since IF2 = IF1 - Crystal frequency, IF2 will shift and must remain within the

IF2 filter and discriminator bandwidth.

2. With the "typical implementation" loop filter.

Receiver Specification

Unless otherwise specified, data is given for T = 25°CV

Note:

1. The overall sensitivity depends on measurements conditions and external components, i.e.:

-100 dBm for BW = ± 10 kHz,

∆F = ± 7.5 kHz, Brate = 4800 bps with RF switch used and external SAW filter

Parameter

Min

Typ

Max

Unit

Comments

Frequency Range

400

480

MHz

Digital programming

Frequency Range

800

950

MHz

Digital programming

Crystal Frequency

10.235

10.245

10.255

MHz

IF 1 = 10.7 MHz

(1)

Crystal Frequency

20.925

20.945

20.965

MHz

IF 1 = 21.4 MHz

(1)

Oscillator Settling Time

5

8

ms

Depending on crystal

specifications

Lock Time

(2)

300

µs

From oscillator settling

Lock Time

(2)

30

µs

100 kHz shift

Phase Noise 400 to 480 MHz

-80

dBc/Hz

At 10 kHz from the carrier

Phase Noise 800 to 950 MHz

-75

dBc/Hz

At 10 kHz from the carrier

Phase Noise 400 to 480 MHz

-91

dBc/Hz

At 100 kHz from the carrier

Phase Noise 800 to 950 MHz

-86

dBc/Hz

At 100 kHz from the carrier

Parameter

Min

Typ

Max

Unit

Comments

IF1

10.7

MHz

21.4 MHz also possible

IF1 Filter Impedance

330

Ω

IF2

455

kHz

IF2 Filter Impedance

1700

Ω

FSK Sensitivity

-105

dBm

Typical performance with a BER of 1% at input pin

RXIN (45). BW= ±10kHz,

∆F = ± 7.5 kHz; Brate =

4800 bps

(1)

Noise Figure

15

dB

Input matched, complete RX chain

Input IP3

-15

dBm

Max Input Power

-5

dBm

BER < 10%